A device for assisting placement of a gastric tube under general anesthesia

Abstract

The application discloses a device for assisting placement of a stomach tube under general anesthesia and relates to the technical field of medical instruments.The device comprises a handheld assembly, a tube insertion guide assembly and a linkage pushing assembly.The handheld assembly comprises an L-shaped bearing plate, the back surface of the L-shaped bearing plate is fixedly provided with a U-shaped holding handle, the surface of the L-shaped bearing plate is fixedly connected with a protective cover, and the tube insertion guide assembly comprises a guide sleeve fixedly embedded on the lower surface of the L-shaped bearing plate.The guide assembly is provided, the guide sleeve is divided into a stomach tube limiting shell and a trachea limiting shell, the trachea avoiding baffle is matched to realize accurate shunting of the stomach tube and the trachea, the miniature camera and the LED fill light at the bottom end of the trachea avoiding baffle can transmit the throat picture in real time, the trachea is prevented from being touched by mistake in the tube insertion process, the operation safety is improved, the stomach tube limiting shell and the trachea limiting shell are made of medical silica gel material, the bottom end edges are smoothly processed, and the irritation and damage to the throat of the patient can be reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a device for assisting in the placement of a gastric tube under general anesthesia. Background Technology

[0002] In the field of clinical anesthesia and surgery, patients undergoing endotracheal intubation and general anesthesia will completely lose their swallowing reflex and ability to cooperate due to the effects of anesthetic drugs, which directly leads to a significant increase in the difficulty of placing a gastric tube.

[0003] Currently, there are two main methods for placing gastric tubes in clinical practice: manual blind insertion and laryngoscopy-assisted intubation. However, the success rate of manual blind insertion depends entirely on the clinical experience of medical staff, resulting in poor consistency. When young medical staff perform the procedure, there is a high risk of the gastric tube being accidentally inserted into the airway, which can lead to complications such as coughing and hypoxia in patients. Secondly, the procedure can easily cause pressure damage to the oral mucosa. Furthermore, in surgeries that require simultaneous endotracheal intubation and gastric tube placement, the procedure must be performed in stages, which prolongs the preoperative preparation time and makes it difficult to meet the clinical demand for efficient and minimally invasive tube placement. Summary of the Invention

[0004] The purpose of this invention is to provide a device for assisting in the placement of a gastric tube under general anesthesia, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for assisting in the placement of a gastric tube under general anesthesia, comprising a handheld component, an insertion guide component, and a linkage pushing component. The handheld component includes an L-shaped support plate, and a U-shaped grip handle is fixedly disposed on the back of the L-shaped support plate. A protective cover is fixedly connected to the surface of the L-shaped support plate. It is worth noting that this structure is ergonomic, making it easy for medical personnel to hold stably with one hand, reducing hand fatigue during operation. The protective cover is fixedly connected to the surface of the L-shaped support plate, which can protect the internal structure of the subsequently installed linkage pushing component from external contamination and collision damage. The intubation guide assembly includes a guide sleeve fixedly embedded on the lower surface of an L-shaped support plate. The guide sleeve has a two-part structure, namely a gastric tube limiting shell and a tracheal limiting shell. A tracheal clearance partition is fixedly connected between the gastric tube limiting shell and the tracheal limiting shell. The linkage pushing component includes a first rotating shaft and a second rotating shaft rotatably connected to the inner wall of the protective cover. Pushing rollers are fixedly connected to the surfaces of both the first rotating shaft and the second rotating shaft. The positions of the two pushing rollers correspond to the top inlet of the guide sleeve, and the two pushing rollers are symmetrically distributed directly above the guide sleeve.

[0006] Preferably, an arc-shaped nozzle is fixedly connected to the surface of the L-shaped support plate. The inner surface of the arc-shaped nozzle has several spray holes, which are evenly distributed on the surface of the arc-shaped nozzle. The position of the arc-shaped nozzle corresponds to the top inlet of the gastric tube limiting shell.

[0007] Preferably, the linkage pushing component further includes an extraction cylinder and a liquid storage box fixedly connected to the surface of the L-shaped support plate, a drive motor fixedly connected to the inner wall of the protective cover, and a transmission rod rotatably connected to the surface of the L-shaped support plate. A second synchronous wheel is fixedly connected to the surface of the transmission rod, and a first synchronous wheel is fixedly connected to the surface of the first rotating shaft. The position of the first synchronous wheel corresponds to the second synchronous wheel, and the first synchronous wheel and the second synchronous wheel are connected by a synchronous belt.

[0008] Preferably, the surface of the second synchronous pulley is rotatably connected to a connecting push rod via a rotating shaft, a piston disc is slidably provided on the inner wall of the extraction cylinder, a piston rod is fixedly connected to the upper surface of the piston disc, the top end of the piston rod extends to the outside of the extraction cylinder, and is rotatably connected to the top end of the piston rod and the bottom end of the connecting push rod.

[0009] Preferably, the surface of the extraction cylinder is fixedly embedded with an inlet conduit and an outlet conduit. The end of the inlet conduit away from the extraction cylinder extends upward into the interior of the storage box. The output end of the inlet conduit is fixedly provided with a one-way inlet valve. The end of the outlet conduit away from the extraction cylinder is fixedly connected to the input end of the arc-shaped nozzle, and the inlet end of the outlet conduit is fixedly provided with a one-way outlet valve.

[0010] Preferably, worm gears are fixedly connected to the surfaces of both the first and second rotating shafts, a drive rod is fixedly connected to the output end of the drive motor, the end of the drive rod away from the drive motor is rotatably connected to the inner wall of the protective cover, and two worm gears are fixedly connected to the surface of the drive rod.

[0011] Preferably, the positions of the two worms correspond one-to-one with the two worm wheels, and the worms mesh with the worm wheels. The thread directions of the two worms are opposite to each other, that is, the two worms can drive the two worm wheels to rotate in opposite directions.

[0012] It is worth noting that the drive motor, as the power source, drives the two pushing rollers to rotate synchronously in opposite directions through the meshing transmission of the worm gear and worm wheel, thereby achieving mechanical and uniform speed pushing of the gastric tube. At the same time, the first rotating shaft, through the transmission of the synchronous pulley and synchronous belt, drives the piston disc inside the extraction cylinder to reciprocate, completing the extraction and spraying of lubricating fluid, thus achieving synchronous pushing and lubrication.

[0013] Preferably, a plurality of rubber anti-slip strips are fixedly connected to the surface of the push roller, and the plurality of rubber anti-slip strips are evenly distributed in a ring array on the surface of the push roller. It is worth noting that the rubber anti-slip strips can increase the friction between the push roller and the gastric tube, and avoid the problem of the gastric tube slipping and deviating during the push process.

[0014] Preferably, a miniature camera and an LED fill light are fixedly embedded at the bottom of the tracheal clearance partition, and a data transmission interface is fixedly connected to the top of the L-shaped support plate. The miniature camera and the LED fill light are electrically connected to the data transmission interface via wires. The data transmission interface can be connected to an external display terminal via a data cable to display the pharyngeal image captured by the miniature camera in real time. It is worth noting that by connecting the data transmission interface to the external display terminal via a data cable, turning on the fill light and the miniature camera, and adjusting the display terminal image to a clear state, it is ensured that the pharyngeal image can be transmitted in real time, providing support for subsequent visualization operations. This visualization structure allows the operator to clearly observe the position of the gastric tube tip, effectively avoiding accidental entry of the gastric tube into the airway and improving the accuracy of tube placement.

[0015] It is worth noting that the miniature camera and LED supplemental light at the bottom of the tracheal avoidance partition collect real-time images of the pharynx and transmit them to an external display terminal, providing the operator with a visual operating view and ensuring the precise insertion of the gastric tube into the esophagus. The dual-channel design of the gastric tube limiting shell and the tracheal limiting shell, combined with the material properties of medical-grade silicone, achieves diversion protection between the gastric tube and the trachea, ultimately achieving the goal of efficient, precise, and minimally invasive placement of the gastric tube in patients under general anesthesia.

[0016] Preferably, both the gastric tube limiting shell and the tracheal limiting shell are made of medical-grade silicone, and the bottom edges of both the gastric tube limiting shell and the tracheal limiting shell are rounded. This material and structural design can reduce the irritation and scratching of the pharyngeal mucosa when the device is inserted into the patient's mouth, which meets the requirements of clinical minimally invasive surgery.

[0017] Compared with the prior art, the beneficial effects of the present invention are: (1) The device for assisted placement of gastric tube under general anesthesia is equipped with a guide component. The guide cannula is divided into a gastric tube limiting shell and a tracheal limiting shell. With the help of the tracheal avoidance partition, the gastric tube and trachea can be accurately separated. The miniature camera and LED supplement light at the bottom of the tracheal avoidance partition can transmit the pharyngeal image in real time, avoid accidental contact with the trachea during the intubation process, and improve the safety of operation. The gastric tube limiting shell and the tracheal limiting shell are made of medical silicone material, and the bottom edge is rounded to reduce the stimulation and damage to the patient's pharynx.

[0018] (2) The device for assisted placement of gastric tube under general anesthesia is equipped with a linkage pushing component. The drive motor drives the worm gear and worm wheel to rotate, so that the two pushing rollers rotate synchronously in opposite directions. The rubber anti-slip strips on the surface of the pushing rollers can stably clamp the gastric tube, replacing manual pushing and avoiding problems such as bending and jamming of the gastric tube caused by uneven force. The pushing process is uniform and controllable, which can significantly improve the placement speed and reduce the dependence on the operator's experience. At the same time as pushing the gastric tube, the synchronous wheel drives the piston of the extraction cylinder to move, automatically extracting the lubricating fluid in the reservoir. The lubricating fluid is evenly sprayed on the surface of the gastric tube through the spray hole of the arc-shaped nozzle, reducing the friction between the gastric tube and the mucosa. Attached Figure Description

[0019] Figure 1 This is a side view of the structure of the present invention; Figure 2 This is a front view structural diagram of the present invention; Figure 3 This is a schematic diagram of the internal structure of the protective cover of the present invention; Figure 4 This is a side view of the linkage push component of the present invention. Figure 5 for Figure 4 Enlarged structural diagram at point A; Figure 6 This is a schematic diagram of the internal structure of the linkage push component of the present invention; Figure 7 for Figure 6 Enlarged structural diagram at point B; Figure 8 This is a schematic diagram of the bottom view structure of the guide sleeve of the present invention.

[0020] In the diagram: 1. Handheld component; 2. Intubation guide component; 3. Linkage and push component; 101. L-shaped support plate; 102. Handle; 103. Protective cover; 201. Guide sleeve; 202. Miniature camera; 203. LED fill light; 204. Data transmission connector; 2011. Gastric tube limiting shell; 2012. Trachea limiting shell; 2013. Trachea clearance partition; 301. First rotating shaft; 302. Second rotating shaft; 303. Push roller; 304. Arc-shaped nozzle; 305. Spray hole; 306. Extraction cylinder; 307. Liquid storage box; 308. Drive motor; 309. Transmission rod; 310. Second synchronous pulley; 311. First synchronous pulley; 312. Synchronous belt; 313. Connecting push rod; 314. Piston rod; 315. Liquid inlet conduit; 316. Liquid outlet conduit; 317. One-way liquid inlet valve; 318. One-way liquid outlet valve; 319. Worm gear; 320. Drive rod; 321. Worm; 322. Rubber anti-slip strip. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-8 The present invention provides a technical solution: a device for assisting in the placement of a gastric tube under general anesthesia, comprising a handheld component 1, an insertion guide component 2, and a linkage pushing component 3. The handheld component 1 includes an L-shaped support plate 101, a U-shaped grip handle 102 is fixedly provided on the back of the L-shaped support plate 101, and a protective cover 103 is fixedly connected to the surface of the L-shaped support plate 101.

[0023] It is worth noting that the structure is ergonomic, allowing medical staff to hold it stably with one hand and reducing hand fatigue during operation. The protective cover 103 is fixedly connected to the surface of the L-shaped support plate 101, which can protect the internal structure of the subsequently installed linkage push component 3 from external contamination and collision damage.

[0024] The intubation guide assembly 2 includes a guide sleeve 201 fixedly embedded on the lower surface of the L-shaped support plate 101. The guide sleeve 201 has two parts: a gastric tube limiting shell 2011 and a tracheal limiting shell 2012. A tracheal clearance partition 2013 is fixedly connected between the gastric tube limiting shell 2011 and the tracheal limiting shell 2012.

[0025] A miniature camera 202 and an LED fill light 203 are fixedly embedded at the bottom of the tracheal clearance partition 2013. A data transmission interface 204 is fixedly connected to the top of the L-shaped support plate 101. The miniature camera 202 and the LED fill light 203 are electrically connected to the data transmission interface 204 through wires. The data transmission interface 204 can be connected to an external display terminal via a data cable to display the throat image captured by the miniature camera 202 in real time. By connecting the data transmission interface 204 to the external display terminal via a data cable, turning on the LED fill light 203 and the miniature camera 202, and adjusting the display terminal image to a clear state, it is ensured that the throat image can be transmitted in real time, providing support for subsequent visualization operations. This visualization structure allows the operator to clearly observe the position of the gastric tube tip, effectively avoiding accidental entry of the gastric tube into the airway and improving the accuracy of tube placement.

[0026] Both the gastric tube limiting shell 2011 and the tracheal limiting shell 2012 are made of medical-grade silicone. The bottom edges of both the gastric tube limiting shell 2011 and the tracheal limiting shell 2012 are rounded. This material and structural design can reduce the irritation and scratching of the pharyngeal mucosa when the device is inserted into the patient's mouth, which meets the requirements of clinical minimally invasive surgery.

[0027] The linkage pushing component 3 includes a first rotating shaft 301 and a second rotating shaft 302 rotatably connected to the inner wall of the protective cover 103. Pushing rollers 303 are fixedly connected to the surfaces of both the first rotating shaft 301 and the second rotating shaft 302. Several rubber anti-slip strips 322 are fixedly connected to the surface of the pushing rollers 303. The rubber anti-slip strips 322 are evenly distributed in a ring array on the surface of the pushing rollers 303. The positions of the two pushing rollers 303 correspond to the top inlet of the guide sleeve 201, and the two pushing rollers 303 are symmetrically distributed directly above the guide sleeve 201. The rubber anti-slip strips 322 can increase the friction between the pushing rollers 303 and the gastric tube, and avoid the problem of the gastric tube slipping and deviating during the pushing process.

[0028] An arc-shaped nozzle 304 is fixedly connected to the surface of the L-shaped support plate 101. Several spray holes 305 are opened on the inner surface of the arc-shaped nozzle 304. The several spray holes 305 are evenly distributed on the surface of the arc-shaped nozzle 304. The position of the arc-shaped nozzle 304 corresponds to the top inlet of the gastric tube limiting shell 2011, so that the lubricant can be accurately sprayed on the surface of the gastric tube.

[0029] It is worth noting that the miniature camera 202 and LED supplementary light 203 at the bottom of the tracheal avoidance partition 2013 collect images of the pharynx in real time and transmit them to an external display terminal, providing the operator with a visual operating view and ensuring that the gastric tube is accurately inserted into the esophagus. The dual-channel design of the gastric tube limiting shell 2011 and the tracheal limiting shell 2012, combined with the material properties of medical-grade silicone, achieves diversion protection between the gastric tube and the trachea, ultimately achieving the goal of efficient, accurate, and minimally invasive placement of the gastric tube in patients under general anesthesia.

[0030] It should be noted that the linkage push component 3 also includes an extraction cylinder 306 and a liquid storage box 307 fixedly connected to the surface of the L-shaped support plate 101, a drive motor 308 fixedly connected to the inner wall of the protective cover 103, and a transmission rod 309 rotatably connected to the surface of the L-shaped support plate 101.

[0031] The surface of the extraction cylinder 306 is fixedly embedded with an inlet conduit 315 and a drain conduit 316. The end of the inlet conduit 315 away from the extraction cylinder 306 extends upward into the interior of the liquid storage box 307. A one-way inlet valve 317 is fixedly installed at the output end of the inlet conduit 315. The end of the drain conduit 316 away from the extraction cylinder 306 is fixedly connected to the input end of the arc-shaped nozzle 304, and a one-way drain valve 318 is fixedly installed at the inlet end of the drain conduit 316.

[0032] A second synchronous pulley 310 is fixedly connected to the surface of the transmission rod 309, and a first synchronous pulley 311 is fixedly connected to the surface of the first rotating shaft 301. The position of the first synchronous pulley 311 corresponds to that of the second synchronous pulley 310, and the first synchronous pulley 311 and the second synchronous pulley 310 are connected by a synchronous belt 312. A connecting push rod 313 is rotatably connected to the surface of the second synchronous pulley 310 through a rotating shaft. A piston disc is slidably provided on the inner wall of the extraction cylinder 306. A piston rod 314 is fixedly connected to the upper surface of the piston disc. The top end of the piston rod 314 extends to the outside of the extraction cylinder 306 and is rotatably connected to the bottom end of the connecting push rod 313.

[0033] It should be noted that worm gears 319 are fixedly connected to the surfaces of the first rotating shaft 301 and the second rotating shaft 302. A drive rod 320 is fixedly connected to the output end of the drive motor 308. The end of the drive rod 320 away from the drive motor 308 is rotatably connected to the inner wall of the protective cover 103. Two worms 321 are fixedly connected to the surface of the drive rod 320. The positions of the two worms 321 correspond one-to-one with the two worm gears 319, and the worms 321 mesh with the worm gears 319. The thread directions of the two worms 321 are opposite to each other, that is, the two worms 321 can drive the two worm gears 319 to rotate in opposite directions. This ensures that after the drive motor 308 is started, the two push rollers 303 can achieve synchronous rotation in opposite directions, thereby stably clamping and advancing the gastric tube.

[0034] It is worth noting that the drive motor 308, as the power source, drives the two push rollers 303 to rotate synchronously in opposite directions through the meshing transmission of the worm gear 321 and the worm wheel 319, thereby achieving mechanical uniform speed pushing of the gastric tube. At the same time, the first rotating shaft 301, through the transmission of the synchronous pulley and the synchronous belt 312, drives the piston disc inside the extraction cylinder 306 to reciprocate, completing the extraction and spraying of lubricating fluid, thus achieving synchronous pushing and lubrication.

[0035] Working principle: During preoperative preparation, medical staff insert the end of the gastric tube through the gastric tube limiting shell 2011 of the guide sleeve 201, ensuring its tip enters between the two push rollers 303. The rubber anti-slip strip 322 provides initial positioning of the gastric tube. The system is checked to ensure sufficient medical lubricant is present in the reservoir 307, and that there are no blockages in the extraction tube 306, inlet tube 315, and outlet tube 316, and that the one-way inlet valve 317 and one-way outlet valve 318 function correctly. The visualization system is then re-tested to confirm that the miniature camera 202 has an accurate shooting angle, the LED supplementary light 203 has appropriate brightness, and the display terminal image is smooth and clear.

[0036] Next, the patient is positioned, and medical staff assist the patient to lie supine with their head tilted back, ensuring that the patient's mouth, pharynx, and esophagus are in a straight line to facilitate smooth insertion of the gastric tube and reduce resistance. Holding the handle 102, the medical staff slowly inserts the bottom end of the guide sleeve 201 into the patient's mouth until the tracheal clearance diaphragm 2013 reaches the patient's pharynx. During this process, the medical-grade silicone gastric tube retainer 2011 and tracheal retainer 2012 reduce frictional damage to the mucosa.

[0037] When the drive motor 308 is turned on, it drives the drive rod 320 to rotate, causing the two worm gears 321 on the surface of the drive rod 320 to rotate synchronously. Since the worm gears 321 mesh with the worm wheel 319, and the threads of the two worm gears 321 are in opposite directions, they drive the first rotating shaft 301 and the second rotating shaft 302 to rotate in opposite directions. The two pushing rollers 303 then rotate synchronously in opposite directions, providing stable clamping and uniform pushing of the gastric tube. This mechanical pushing method replaces manual pushing, avoiding problems such as bending and jamming of the gastric tube caused by uneven pushing force, significantly improving the speed and stability of tube placement, and reducing reliance on the operator's experience.

[0038] While the drive motor 308 is running, the first rotating shaft 301 drives the first synchronous pulley 311 to rotate. The first synchronous pulley 311 drives the second synchronous pulley 310 to rotate via the synchronous belt 312. The second synchronous pulley 310 drives the transmission rod 309 to rotate. During the rotation of the transmission rod 309, it drives the connecting push rod 313 to reciprocate. The connecting push rod 313 pulls the piston rod 314 up and down, which in turn drives the piston disc inside the extraction cylinder 306 to slide up and down. When the piston disc moves upward, a negative pressure is formed inside the extraction cylinder 306. The lubricating fluid in the reservoir 307 enters the extraction cylinder 306 through the inlet conduit 315 and the one-way inlet valve 317. When the piston disc moves downward, the pressure inside the extraction cylinder 306 increases. The lubricating fluid enters the arc-shaped nozzle 304 through the one-way drain valve 318 and the drain conduit 316, and is finally sprayed evenly onto the surface of the gastric tube through the spray hole 305. The synchronous spraying of the lubricating fluid reduces the friction between the gastric tube and the mucosa, further reducing the risk of mucosal damage. Medical staff can observe the throat image captured by the miniature camera 202 in real time through the display terminal, and adjust the position of the guide tube 201 according to the image to ensure that the tip of the gastric tube is accurately aligned with the esophageal inlet and avoid accidental entry into the airway.

[0039] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0040] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A device for assisting in the placement of a gastric tube under general anesthesia, comprising a handheld component (1), a tube guiding component (2), and a linkage pushing component (3), characterized in that: The handheld component (1) includes an L-shaped support plate (101), a U-shaped grip handle (102) is fixedly provided on the back of the L-shaped support plate (101), and a protective cover (103) is fixedly connected to the surface of the L-shaped support plate (101). The intubation guide assembly (2) includes a guide sleeve (201) fixedly embedded on the lower surface of the L-shaped support plate (101). The guide sleeve (201) has two parts: a gastric tube limiting shell (2011) and a tracheal limiting shell (2012). A tracheal clearance partition (2013) is fixedly connected between the gastric tube limiting shell (2011) and the tracheal limiting shell (2012). The linkage pushing component (3) includes a first rotating shaft (301) and a second rotating shaft (302) rotatably connected to the inner wall of the protective cover (103). Pushing rollers (303) are fixedly connected to the surfaces of the first rotating shaft (301) and the second rotating shaft (302). The positions of the two pushing rollers (303) correspond to the top inlet of the guide sleeve (201), and the two pushing rollers (303) are symmetrically distributed directly above the guide sleeve (201).

2. The device for assisting in the placement of a gastric tube under general anesthesia according to claim 1, characterized in that: An arc-shaped nozzle (304) is fixedly connected to the surface of the L-shaped support plate (101). Several spray holes (305) are opened on the inner surface of the arc-shaped nozzle (304). The several spray holes (305) are evenly distributed on the surface of the arc-shaped nozzle (304). The position of the arc-shaped nozzle (304) corresponds to the top inlet of the gastric tube limiting shell (2011).

3. The device for assisting in the placement of a gastric tube under general anesthesia according to claim 2, characterized in that: The linkage push assembly (3) also includes an extraction cylinder (306) and a liquid storage box (307) fixedly connected to the surface of the L-shaped support plate (101), a drive motor (308) fixedly connected to the inner wall of the protective cover (103), and a transmission rod (309) rotatably connected to the surface of the L-shaped support plate (101). A second synchronous wheel (310) is fixedly connected to the surface of the transmission rod (309), and a first synchronous wheel (311) is fixedly connected to the surface of the first rotating shaft (301). The position of the first synchronous wheel (311) corresponds to that of the second synchronous wheel (310), and the first synchronous wheel (311) and the second synchronous wheel (310) are connected by a synchronous belt (312).

4. The device for assisting in the placement of a gastric tube under general anesthesia according to claim 3, characterized in that: The surface of the second synchronous pulley (310) is rotatably connected to a connecting push rod (313) via a rotating shaft. A piston disc is slidably provided on the inner wall of the extraction cylinder (306). A piston rod (314) is fixedly connected to the upper surface of the piston disc. The top end of the piston rod (314) extends to the outside of the extraction cylinder (306) and is rotatably connected to the bottom end of the connecting push rod (313).

5. The device for assisting in the placement of a gastric tube under general anesthesia according to claim 4, characterized in that: The surface of the extraction cylinder (306) is fixedly embedded with an inlet conduit (315) and a drain conduit (316). The end of the inlet conduit (315) away from the extraction cylinder (306) extends upward into the interior of the storage box (307). The output end of the inlet conduit (315) is fixedly provided with a one-way inlet valve (317). The end of the drain conduit (316) away from the extraction cylinder (306) is fixedly connected to the input end of the arc-shaped nozzle (304), and the inlet end of the drain conduit (316) is fixedly provided with a one-way drain valve (318).

6. The device for assisting in the placement of a gastric tube under general anesthesia according to claim 5, characterized in that: The surfaces of the first rotating shaft (301) and the second rotating shaft (302) are both fixedly connected with worm gears (319). The output end of the drive motor (308) is fixedly connected with a drive rod (320). The end of the drive rod (320) away from the drive motor (308) is rotatably connected to the inner wall of the protective cover (103), and two worm gears (321) are fixedly connected to the surface of the drive rod (320).

7. The device for assisting in the placement of a gastric tube under general anesthesia according to claim 6, characterized in that: The positions of the two worms (321) correspond one-to-one with the two worm wheels (319), and the worms (321) mesh with the worm wheels (319). The thread directions of the two worms (321) are opposite to each other, that is, the two worms (321) can drive the two worm wheels (319) to rotate in opposite directions.

8. The device for assisting in the placement of a gastric tube under general anesthesia according to claim 7, characterized in that: The surface of the push roller (303) is fixedly connected with a number of rubber anti-slip strips (322), which are evenly distributed in a ring array on the surface of the push roller (303).

9. The device for assisting in the placement of a gastric tube under general anesthesia according to claim 8, characterized in that: The bottom end of the tracheal clearance partition (2013) is fixedly embedded with a miniature camera (202) and an LED fill light (203). The top end of the L-shaped support plate (101) is fixedly connected with a data transmission interface (204). The miniature camera (202) and the LED fill light (203) are electrically connected to the data transmission interface (204) through wires. The data transmission interface (204) can be connected to an external display terminal signal through a data cable to display the throat image captured by the miniature camera (202) in real time.

10. The device for assisting in the placement of a gastric tube under general anesthesia according to claim 9, characterized in that: The gastric tube limiting shell (2011) and the tracheal limiting shell (2012) are both made of medical silicone, and the bottom edges of the gastric tube limiting shell (2011) and the tracheal limiting shell (2012) are both rounded.

Images